| Fern Down to Orbetello | 847.19 mi (1,363.42 km) |
| Fern Down to Oria | 1,176.00 mi (1,892.60 km) |
| Fern Down to Oristano | 907.48 mi (1,460.44 km) |
| Fern Down to Orta Nova | 1,063.88 mi (1,712.15 km) |
| Fern Down to Orte | 887.34 mi (1,428.04 km) |
| Fern Down to Ortona | 966.45 mi (1,555.35 km) |
| Fern Down to Orvieto | 864.81 mi (1,391.77 km) |
| Fern Down to Orzinuovi | 660.43 mi (1,062.86 km) |
| Fern Down to Osimo | 879.75 mi (1,415.81 km) |
| Fern Down to Ospitaletto | 659.12 mi (1,060.75 km) |
| Fern Down to Ostuni | 1,163.00 mi (1,871.66 km) |
| Fern Down to Ottaviano | 1,042.37 mi (1,677.53 km) |
| Fern Down to Ovada | 648.55 mi (1,043.74 km) |
| Fern Down to Ozieri | 878.92 mi (1,414.48 km) |
| Fern Down to Paceco | 1,133.46 mi (1,824.13 km) |
